Speaker Magnetic Conductive Element for Balanced Vibration
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Solution Overview
Problem
Miniaturized speakers in portable electronic devices face challenges with unbalanced vibration and limited power capacity due to the direct connection of the vibration and magnetic circuit systems, resulting in compromised sound quality.
Innovation Solution
The speaker design incorporates a magnetic conductive element with a lower and upper magnetic conductive plate forming a receiving space to support a coil assembly, which includes a frame and coil, and a suspension system with oblique and horizontal portions to enhance the outer diameter and balance vibration, allowing for improved power handling and sound generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the coil is fixedly supported by only the vibrating diaphragm, then the structure is simple and compact, but unbalanced vibration is easily generated and power capacity is limited
Solution Approach 1:
The patent introduces a magnetic conductive element as an intermediary component between the coil and the diaphragm. This element provides additional support points (first and second supporting portions) that distribute the mechanical load, enabling balanced vibration while maintaining structural compactness. The intermediary element resolves the contradiction by adding functional complexity only where needed without overall structural expansion.
2Device complexity
If the coil is fixedly supported by only the vibrating diaphragm, then the structure is simple and compact, but unbalanced vibration is easily generated
Solution Approach 1:
The magnetic conductive element serves as a mediator that improves vibration balance by providing distributed support. The first and second supporting portions of the magnetic conductive element contact different regions of the diaphragm, creating multiple stabilization points that prevent unbalanced vibration while keeping the overall structure simple.
3Stability of the object's composition
If power is reduced to meet the balance of the vibration system, then vibration balance is improved, but acoustic performance is limited
Solution Approach 1:
The magnetic conductive element enables the system to achieve both vibration balance and high power capacity simultaneously. By distributing the mechanical support across multiple points (first and second supporting portions), the intermediary element allows the coil to generate stronger magnetic forces without creating unbalanced vibration, thus resolving the trade-off between power and stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design achieves balanced vibration and increased power capacity, enhancing the acoustic performance of the speaker by stabilizing the diaphragm and optimizing the magnetic circuit interaction.
Implementation Method 1
The coil assembly (12) surrounds at least a part of the magnet (23). When electrified, the coil (14) will be actuated by the magnetic field produced in the magnetic gap and force the diaphragm (11) to vibrate for generating sound.
Implementation Method 2
The magnetic conductive element (22) forms a magnetic gap together with the magnet (23)
Data Source
AI summary
The present disclosure provides a speaker having a lower magnetic conductive plate for carrying a magnet thereon and an upper magnetic conductive plate engaging with the lower magnetic conductive plate. The lower magnetic conductive plate includes a first oblique portion and a first horizontal portion for increasing an outer diameter of the lower magnetic conductive plate. The upper magnetic conductive plate includes a second oblique portion and a second horizontal portion both for increasing an outer diameter of the upper magnetic conductive plate. The lower and upper magnetic conductive plates cooperatively form a receiving space for accommodating a suspension to support a coil assembly. The lower magnetic conductive plate further includes a protruding portion extending perpendicularly from a middle portion of the bottom for carrying the magnet. The suspension is used for supporting the coil assembly for providing balanced vibration to the diaphragm.